We're dividing 75430054 by 326 
The aim is to understand the frequency of 326 in 75430054.

On to step 1:
326 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 326

Step 2:
If we divide 75 by 326, we get 0 and a remainder of 75.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 75, we end up with 75.
Append the next digit (4) from the dividend to 75 and continue with: 754 / 326

On to step 3:
754 divided by 326 is 2 with a remainder of 102.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 102 after subtracting 652 from 754.
Append the next digit (3) from the dividend to 102 and continue with: 1023 / 326

Let's proceed to step 4:
326 can be fit into 1023 3 times, resulting in a remainder of 45.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Deduct 978 from 1023 and we're left with 45.
Take the next digit (0) from the dividend and append it to 45, then repeat: 450 / 326

On to step 5:
326 can be fit into 450 1 times, resulting in a remainder of 124.
Put 1 as the next digit of the answer. 
Result so far: 231.0
Deduct 326 from 450 and we're left with 124.
Append the next digit (0) from the dividend to 124 and continue with: 1240 / 326

On to step 6:
The number 326 fits into 1240 3 times, leaving a remainder of 262.
The number 3 becomes the next digit in our result. 
Result so far: 2313.0
Subtracting 978 from 1240 leaves us with 262.
Append the next digit (5) from the dividend to 262 and continue with: 2625 / 326

Let's proceed to step 7:
When dividing 2625 by 326, we get 8 with a remainder of 17.
Put 8 as the next digit of the answer. 
Result so far: 23138.0
If we take 2608 away from 2625, we end up with 17.
Grab the next digit (4) from the dividend, add it to 17, then carry on: 174 / 326

Advancing to step 8:
326 can be fit into 174 0 times, resulting in a remainder of 174.
Use 0 as the next digit of our solution. 
Result so far: 231380.0
Deduct 0 from 174 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Moving on to step 9:
The number 326 fits into 1740 5 times, leaving a remainder of 110.
The number 5 becomes the next digit in our result. 
Result so far: 231380.5
If we subtract 1630 from 1740, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Let's proceed to step 10:
1100 divided by 326 is 3 with a remainder of 122.
Use 3 as the next digit of our solution. 
Result so far: 231380.53
The remainder is 122 after subtracting 978 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Moving on to step 11:
If we divide 1220 by 326, we get 3 and a remainder of 242.
Put 3 as the next digit of the answer. 
Result so far: 231380.533
If we take 978 away from 1220, we end up with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

After the division, we end up with 231380.533 and a remainder of 0.0242.